Combined door-bell and burglar-alarm.



E. J. LUTWYGHE.

COMBINED DOOR BELL AND BURGLAR ALARM.

APPLICATION FILED JUNE 6,1914.

Patented Jan. 9, 1911'.

2 SHEETS-SHEET l.

E. J. LUTWYCHE.

COMBINED DOOR BELL AND BURGLAR ALARM.

APPLlCATlON FILED JUNE 6.19M.

Patented Jan. 9, 1917.

2 SHEETS-SHEET 2.

1720921 07" 5&5 Ali/72056 EDGAR J.

LUTWYCHE, OF CHICAGO,

ILLINOIS.

COMBINED DOOR-BELL AND BUEGLAR-ALARM.

Specification of Letters Patent.

Patented Jan. a, rare.

Application filed June .6, 1914. Serial No. 843,426.

one desiring admission.

In the drawings, wherein like reference characters indicate like orcorresponding parts, Figure 1 represents the inner face of the door, andthe associated casing, with my improved device attached thereto; Fig. 2is a sectional view on the line 22 of Fig. 1 showing my improved devicein position in the manner in which it is operated as a door-bell; Fig. 3is a similar view on the line 3-3 of Fig. 1, showing the manner in whichthe device will be operated as an alarm;

Fig. 4: is a bottom plan view of the bell mechanism; Fig. 5 is a topplan view of the same with the bell removed; Fig. 6 is a perspectiveview of the means of connecting the check chain to the door casing.

In the drawings, 1 represents the door provided with my improved device,in which 2 represents the door casing. A spring-actuated bell 3 isattached to the door, 006perating with a push pin 5 on the opposite faceof the door, and extendingtherethrough to engage and operate the bell.The bell is also provided with a bar 6, to which is connected a chain 7,which engages any suitable cooperating member 8, attached to the doorcasing. The bar 6 is so constructed that upon drawing the chain it willactuate the bell. Thus as the door is closed, as shown in Figs. 1 and 3,any effort to open the door will result in a pull on the bar 6, when thebell will be actuated and the alarm given. When the door is closed, andany person desires admission, the push pin may be employed to operatethe bell, which will serve to ive notice, and the attendant may thenrelease the chain and open the door. Thus the device serves a doublepurpose.

Any preferred form of spring-actuated bell may be employed, that shownbeing preferred. In this form the winding post 9 may be operated bymeans of the bell 3,

screwed thereon in the usual manner. The ratchet 10 on the shaft 9 andthe pawl 11 pivoted on the back of a plate ll (partly broken away asshown by dotted lines in Fig. 5) hold the winding post in its woundposition. Upon the opposite end of the winding post is attached the endof a coiled spring 12, the other end of the coiled spring being attachedto a spider 13, carried on a sleeve 14 mounted on the winding post. Theupper end of the sleeve is provided with the usual gear wheel 15, which,by means of the train 16 and 17, drives the spur wheel 18,

forming one member of the escapement, of which the yoke 19 is the othermember, carrying a clapper 20 on the wire or rod 21.

Figs. 4c and 5 show a notched pin 22, resiliently held at its outerlimit by a spring 23, an ofiset portion 24- thereof engaging the wire orbar 21 on the clapper, holding it in its outer position and preventingthe operation of the escapement. Any means serving to press the bar 22inwardly in a longitudinal direction serves to release the wire or bar21 of the clapper when the escapement is actuated by the spring, and theclapper will strike a succession of rapid blows upon the bell 3 inproximity thereto. As shown in the drawing, a lever 25 pivoted at 26 hasone end extended to contact with the head of the pin 22, while the outerend of the lever has attached thereto the bar 6, before alluded to,which carries the chain 7. It will thus be seen that any pull on thechain serves to force the pin inward and releases the escapement.

As shown in Fig. 2, the lever 25 is provided with an inclined edge,against which the inner end of the push pin 26 impinges in such mannerthat as the push pin is pressed inward, it will also serve to press thelever, together with the pin 22, inward, thus causing the bell tooperate as before described. Any other simple construction of thespring-actuated bell may be employed, the idea being to so attach thechain, or equivalent member, and connect the push pin with the same bellthat it serves both purposes, first as a proper means of notificationwhen anyone desires to properly gain admission, and second of soundingan alarm when anyone improperly attempts to gain admission.

In Fig. 6, I have shown my preferred means for engagement with the freeend of the chain. As here shown, a circular plate 27 is provided with adepending flange 28, and has formed therein a slot 29, provided with anenlarged opening 30. The end of the chain connection 31 readily passeswithin the enlarged opening 30, and upon being moved to the left(Fig. 1) drops down to the extreme end of the slot 29, gravity aiding inthis connection. I prefer to extend the slot on the other side of theenlarged opening, as at 32, so that when an eifort is made byunauthorized persons to move the chain about the slot With theexpectation of registering the member 81 with the enlarged open portionof the slot, the weight of the chain 7 combined with the Weight of theconnecting device itself, will cause the latter to fall by gravity intothe restricted extended portion 32 of the slot and prevent escape of theconnection 31 from the plate 27, as will be obvious. Of course, from theinside of the door with a full view of the plate, the connection may bereadily registered with the enlarged opening in the slot, and theconnection removed by authorized persons in the expected proper use ofthe device.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a device of the character described,an alarm adapted to be mounted on a door, a casing, means for actuatingthe alarm comprising an escapement mechanism, a stop device resilientlyfastened to the casing and having an oif-set part engaging theescapement for holding the same inactive, a pivoted rocking leverengaging said stop device, a plurality of distinct releasing devices engaging said lever, one of said releasing devices comprising a movableplunger coacting with an outwardly projecting'inclined part carried atone end of the lever, and the other of said releasing devices comprisinga flexible member and a bar projecting to the exterior of the casingfastened at one end to said flexible member and fastened at its otherend to the rocking lever, the other end of said flexible member beingadapted to be fastened to the frame of the door to limit the extent ofthe opening of the door.

2.-In a device of the character described, an alarm adapted to bemounted upon a door, means for actuating the'alarm comprising anescapement mechanism and a rocking lever, a single stop device forholding the escapement inactive, a plurality of distinct releasingmechanisms for said stop device, one of said releasing mechanismscomprising a movable plunger, passing through the door and an oifsetprojecting part on the side of the lever extending at an angle theretoand adapted to be engaged by said plunger, the said ofiset projectingpart of the lever being inclined relative to the body of the lever, andthe other releasing device comprising a fiexiblemember secured at oneend to the rocking lever and at its opposite end to the door frame tolimit the extent of the opening of the door.

In testimony whereof, I have hereunto signed my name in the presence oftwo subscribing witnesses.

EDGAR J. LUTWYCHE.

Witnesses:

JOHN W. HILL, CHARLES I. COBB.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. G.

